Intermediate carrier for sugar mills



Jan. 8, 1929. 1,698,088

0. FRANKE I INTERMEDIATE CARRIER FOR SUGAR MILLS Filed April 25, 1925 2 Sheets-Sheet 1 Grimm Jam s, 1929. 1,698,088

0. FRANKE INTERMEDIATE CARRIER FOR SUGAR MILLS Filed April 25, 1925 2 Sheets-Sheet 2 Patented Jan. 8, 1929.

PATENT OFFICE.

OTTO FRANKIE, BIRMINGHAM, ALABAMA, ASSIGNOR TOBIRMINGHAM MACHINE 8c FOUNDRY 00., A' CORPORATION ALABAMA.

. INTERMEDIATE CARRIER FOR SUGAR MILLS.

Application filed April 25, 1925. Serial No. 25,948.

My invention relates to improvements in cane sugar mills, and is more particularly concerned with the improvement of the intermediate cane chute which serves to transfer or convey the bagasse from one mill to another.

More particularly, my invention relates to an'intermediate can chute or carrier of the type in Which all moving parts are eliminated and the rolls of one mill act to deliver the bagasse in a sheet or blanket of substantially constant thickness automatically and uniformly to the rolls of the succeeding mill.

In intermediatecarriers of the type in question serious clifiicult-y has arisen by reason of the tendency of the bagasse to choke in the chute at the intake end of the carrier, and when this occurs the rolls feeding the bagasse to the intermediate carrier will become ammed, the walls of the chute will tend to become distorted, and the throat of the chute will be filled with bagasse which is sotightly packed as to be very difiicult to remove and which while being removed necessitates a shutting down of the mill.

I have discovered that this'tendency of the bagasse to pack in the chute at theintake end of the intermediate carrier, and thus to choke the carrier, can be avoid-ed if the intake chute is provided with a yieldable wall adapted to give automatically so as to exp and the cross sectional area of the chute and prevent any tendency of the bagasse to choke therein, leaving it at all times free to pass up onto the open part of the carrier in a sheet of substantially uniform thickness.

More particularly my invention contem-v plates providing the carrier at its intake end with a relatively short chute having a hinged wall, preferably its upper wall, and having the free end of said wall which is remote from the rolls feeding the bagasse to the carrier, automatically controlled as to position by a yieldable means which can be set so that under excessive pressures upwardly from the bagasse the hinged wall will be permitted to give and thus release the bagasse so that it 7 engaged by yieldable means such as the will not choke. I V V 0 My invention also embodies the details of construction and arrangement of parts which in their preferred embodiment only are illustrated in the accompanying drawings which form a part of this specification, and in which Fig. 1 is a cross-sectional view of two spaced cane sugar mills and their intermediate carrier constructed in accordance with my I invention. 1

Fig. 2 is an enlarged detail view of the intake chute of the carrier shown in crosssection. i

Fig. 3 is a side view of the intake chute and part of the mill on which it is mounted.

Fig. 4 is a partial plan view of the intake chute of the carrier. V v

Similar reference'numerals refer'to simi- 'lar parts throughout the drawings.

- In the embodiment of my invention illustrated, I show my improved type ofc'arrier associated with the discharge side of the rolls 1 and 2 of-the initial mill 3, and acting to deliver the stream .or blanket of bagasse tothe intake side of the rolls 4 and f the succeedand a more sharply sloping and relatively shorter discharge end 8. The chute has side walls 9 which extend from scraper bars 10 and 11, which are disposed respectively above and below the intake chute 12 on the mill 2, to the mill 6; The chuteis provided with an upper scraper toe 13 shaped and mounted to engage the roll 1, and with a bottom scraper toe 14 which engages the lower roll 2. It will be observed that the toe 13 has a top wall 15 of the chute mounted flush in its recessed end portion 16 and that it has mountedbetween this top wall 15 and a retainer plate 17 the cylindrical or hinge end 18 of a yieldable top presser plate 19. This plate 19 has mounted in the upper side thereof a stud screw 20 which'projects through a slot in the top wall 15 of the chute and there receives a taper swing of the presser plate 19 into the chute 12. Near'its free endthe presser plate is screw 27 threaded through the cap 28 of'the 8 to the succeeding mill.

barrel. The barrels are mounted on the top wall 15 of the. chute by brackets 29 with the plungers passing through suitable openings in said top wall 15 and acting to hold the presser plate yieldably depressed into the chute to the limit permitted by the adjustment of the nuts 22 on the stud bolt 20.

i In operation, as the stream of bagasse is discharged from the rolls 1 and 2 and collected by the toes 13 and 14, it passes in a stream into the'chute 12 and isrnormally forced bythe feed of the rolls 1 and 2 to rise'up the inclined portion 7 of the carrier and to fall by gravity down its discharge end i The yieldable presser plate 19 is set to give thezdesired thickness to the bagasse stream or blanket. Whenever, for any reason the bagasse tends to choke in the intake chute 12 of the carrier, the pressure of the dense mass as it becomes compressed in the intake chute Will overcome the resistance ofsprings 25, causing the presser plate to give and swing upwardlyabout its hinge end 18, thus relieving the congestion of the bagasse in the intake chute and permitting the feed to continue without interruption and with a substantially uniform depth of stream which gives a substantially constantdelivery of the bagasse to the'succeeding mill. f

While it is to be understood my improved yieldable pressure plate may be associated with any standard type of carrier or intake chutetherefor, I have shown it inthe accompanying drawings associated with an intake chute having bagasse side plates 30 connected by plates 31 to the sides 9 of the chute and having top and bottom brackets 32 and 33 in which the scraper bars 10and 11, respectively, are mounted. The scraperbars have their ends which are mounted in said plates rounded, and I key to said ends the arms 34 "and 35, which at their free ends oneach side' of the chute are connected by a bolt 36 which projects above the upper arms of each pair and has a coiled spring 37 surrounding it and bearing at one end on the upper arm and at the other end on a seat 38 held adjustable on" the bolt by a nut 39; These act as yieldable means to rock the scraper bars and force the scraper toes 13 and 14 against the rolls. Each side plate has a bracket 40 which=isbolted to the adjacent housing 41 of the mill 3.

It is, as stated,'to be. understood that assembly of parts as thus described in detail for the intake chute donot form a particular part of my invention but serve to illustrate a typical intake chute structure with which my invention has been successfully. used;

My invention contemplates broadly the utilization of any yieldable wall so placed at changes in arrangement and substitution of equivalents may be made by those skilled in the art without departing from the invention as defined in the appended claims.

What I claim is:

'1. An intermediate carrier for spaced sugar mills having rolls, comprising a chute having side walls and upwardly and downwardly inclined portions, shoes mounted at the intake end of said chute and co-acting with the feed rolls, the. upper shoe having a pivotal support, a presser plate hingedly mounted below the plane of said support, adjustable screw means to limit the downward swinging movement of the plate, and a spring-pressed plunger acting on the free endot said plate to press it yieldably against the bagasse beingfed to the rising intake end of said chute.

' 2. An intermediate carrier for spaced sugar mills having rolls, comprising a chute having side walls and upwardly and downwardly inclined portions, shoes mountedat the intake end of said chute and co-acting with the j rolls of the first mill, the upper shoe having a pivotal support, a presser plate hingedly,

mounted between the line of said support and the first mill, and a spring-pressed plunger acting upon the free end of said plate to press it yieldingly against the bagasse being fed to the rising intakeend of said chute.

3. A chute for transferringbagassebetween side walls and an upwardly-inclined bottom at its receiving end and a downwardly-inclined bottom at its delivery end, an upwardly-inclinedhinged top at the receiving end,

of said top, and separate, adjustable means for yieldingly opposing upward swinging movement thereof, the extent of such opposition being subject to selective variation by adjustment of said opposing means.

5. In an inclined intermediate bagasse cartent of the downward swinging movement 7 rier between the delivering and receiving rolls of spaced sugar mills, means forming a delivery chute of substantially uniform cross sectional area adjacent the delivering rolls,

and yielding means permitting enlargement:

of the chute under abnormal pressure.

6. In an inclined intermediate bagasse carrier between the delivering and receiving rolls of spacedsugar mills, a delivery chute eX- tending from the delivering rolls into the carrier, and having a substantially uniform cross sectional area, a hinged wall for the chute and means for yieldingly permitting. displacement of said wall under abnormal pres sure.

7. In an inclined intermediate bagasse carrier between the delivering and receiving rolls of spaced sugar mills, a delivery chute extending from the delivering rolls into the carrier, and having a substantially uniform cross sectional area, a movable wall for the chute, a pivoted support for the wall adjacent the rolls, and a yielding support for th other end of the wall.

8. In an inclined intermediate bagasse carrier between the delivering and receiving rolls of spaced sugar mills a delivery chute associated with the delivery rolls and extending into the carrier, upper and lower walls for the chute, a pivotal support for the upper In testimony whereof I afiix my signature.

o'rro FRANKE. 

